Figure 19.1: WWW19 Logo

Music:

North Carolinian Bluegrass

Animation

We had a look at what North Carolina was famous for and dismissed NASCAR Racing in favour of the Wright Brothers first flight. To find out the dimensions of the Flyer we looked at the original patent and estimated the size of the hangar from the reconstructed buildings on the site.

FA FB RA FD FC RB FH FE FF FG GE GF GG 200 300 100 900 50

Figure 19.2: Wright Brothers Hangar

A AR1 AR2 AR3 AR4 AL1 AL2 AL3 spar AL4 bow rib BR1 BR2 BR3 BR4 BL1 BL2 BL3 BL4 CR1 CR2 CR3 CR4 CL1 CL2 CL3 CL4 D DR1 DR2 DR3 DR4 DL1 DL2 DL3 DL4 E ER1 ER2 ER3 EL1 EL2 EL3 F G HL HR ML1 ML2 MR1 MR2 NL1 NL2 NR1 NR2 Wings 90 units apart Upper wing y=-90 Lower wing y=0 Wings connected by 'standards' 200 -200 100 -100 0 35 85 110 140 200 195 140 90 70 -110 -30 -95 -110

Figure 19.3: Flyer Dimensions

The actual flight was performed with two rudders but we used artistic licence to only have one as in the original patent so that we could see the engines better.

The path_ology_3d library does not do hidden line elimination, so we needed to draw the parts of the flyer in the correct order to achieve the desired effect. That meant having 3 planes with parts in different orders depending on whether it was flying towards or away from the viewpoint or right to left. This is the main reason for the plane going out of sight on its travels as it is a different plane that reappears. The pilot controls the flyer by bending the front of the wing and using the rudder. The pilot is seated on a platform that moves sideways to perform some of the changes.

This was our first attempt at adding drop shadows and they certainly help to give a 3D view of the scene. We changed the position of the sun for the Opening and Closing Sessions. Not sure whether anybody noticed!

The Wright Brothers did have a cycle shop in Dayton, Ohio and did make tandems although there is no record of them having one at Kitty Hawk.

l-5,3l-0.5,-0.5l5,-4

Figure 19.4: Wright Brothers on Tandem

At one stage we thought about changing the oak leaf in the logo into a Wright brother but it never looked right!

Figure 19.5: Leaf to Aviator